Recovery of Acetic Acid by Reactive Distillation:  Parametric Study and Nonlinear Dynamic Effects

Singh, Ajay Kumar; Tiwari, Anand P.; Bansal, Vineet; Gudi, Ravindra D.; Mahajani, Sanjay M.

doi:10.1021/ie071070i

Cited by 9 publications

(15 citation statements)

References 25 publications

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“…10,12,27 However, reactive distillation has strong nonlinear characteristics, especially the multiplicity, which have an important impact on the design, operation, and control of the reactive distillation system. 42,43 Yamaki et al 42 found that there was a phenomenon of output multiplicity in the tert-amyl methyl ether (TAME) RD column by simulation, but the mechanism of multiplicity and the effect of the multiplicity on process operation were not studied. Singh et al 43 analyzed the operating variables of the RD column in the acetic acid recovery process and believed that the superposition of phase equilibrium and reaction led to the multiplicity phenomenon in RD.…”

Section: Output Multiplicity Of Reactivementioning

confidence: 99%

“…42,43 Yamaki et al 42 found that there was a phenomenon of output multiplicity in the tert-amyl methyl ether (TAME) RD column by simulation, but the mechanism of multiplicity and the effect of the multiplicity on process operation were not studied. Singh et al 43 analyzed the operating variables of the RD column in the acetic acid recovery process and believed that the superposition of phase equilibrium and reaction led to the multiplicity phenomenon in RD. However, the effect of multiplicity phenomenon on the energy consumption of reactive distillation has not been considered, so the multiplicity phenomenon of the RD has not been fully utilized.…”

Section: Output Multiplicity Of Reactivementioning

confidence: 99%

“…Reactive distillation has the advantages of breaking the restriction of reaction equilibrium, improving conversion and separation efficiency. ,, However, reactive distillation has strong nonlinear characteristics, especially the multiplicity, which have an important impact on the design, operation, and control of the reactive distillation system. , Yamaki et al . found that there was a phenomenon of output multiplicity in the tert -amyl methyl ether (TAME) RD column by simulation, but the mechanism of multiplicity and the effect of the multiplicity on process operation were not studied.…”

Section: Output Multiplicity Of Reactive Distillationmentioning

confidence: 99%

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Dynamic Process Intensification of Dimethyl Ether Reactive Distillation Based on Output Multiplicity

Liu

Gao

Ren

et al. 2020

Ind. Eng. Chem. Res.

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Dynamic process intensification technology is an emerging technology of process intensification. It adopts a nonsteady-state operation mode, which can improve the time-averaged performance of the reaction and distillation system without increasing equipment investment. This research proposes to implement dynamic process intensification in reactive distillation (RD) of methanol dehydration to dimethyl ether (DME). The multiplicity of the reactive distillation process is studied by bifurcation analysis, which uses the heat duty of reboiler as a bifurcation parameter and uses the flow rate and mole fraction of the distillate as the dependent variables (state variables). Based on the output multiplicity of the system, the dynamic intensification process for periodically switching the auxiliary products is established. Compared with the steady-state operation, the time-averaged conversion of the system under nonsteady-state operation is increased by 3.49%, and the heat duty of the reboiler is reduced by 6.00 kW. Finally, dynamic optimization (DO) of RD is studied through the control vector parametrization (CVP) method by using conversion and the heat duty of reboiler as the objective functions. The optimal cyclic steady state is obtained when the duration of the operation period with high yield is 1.1 h; correspondingly, the duration of the operation period with high purity is 0.1 h.

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Section: Output Multiplicity Of Reactivementioning

confidence: 99%

Section: Output Multiplicity Of Reactivementioning

confidence: 99%

Section: Output Multiplicity Of Reactive Distillationmentioning

confidence: 99%

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Dynamic Process Intensification of Dimethyl Ether Reactive Distillation Based on Output Multiplicity

Liu

Gao

Ren

et al. 2020

Ind. Eng. Chem. Res.

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“…Therefore, it is crucial to maintain an inventory of cyclohexane in the rectifying section in order to keep the system at the steady state wherein cyclohexane only acts as the entrainer. The sudden drop in the reactive distillation system was reported to be caused by interaction between the separation and reaction kinetics or nonlinearity in VLE with a reaction, , leading to multiplicities. Kim and Han demonstrated that the dynamic behavior of the RD column including the sudden drop can be well explained by nonlinear wave propagation theory.…”

Section: Process Designmentioning

confidence: 99%

Entrainer-Enhanced Reactive Distillation for the Production of Butyl Acetate

Cho

Kim

et al. 2014

Ind. Eng. Chem. Res.

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A new reactive distillation (RD) process using a mass separation agent (extraneous entrainer) for the efficient production of butyl acetate from butanol and acetic acid via an esterification reaction was proposed. Until now, butyl acetate, a product of the esterification reaction, has been used as an internal entrainer in the production of butyl acetate. It has also been accepted that a configuration consisting of a prereactor followed by a reactive distillation column is most suitable for the production of butyl acetate. The use of an internal entrainer may shift the reaction equilibrium to be favorable to the reverse reaction in the reactive section, limiting the reaction yield. However, an extraneous entrainer, such as cyclohexane, can resolve the problem. It can be used to break the water−alcohol azeotrope and remove water more efficiently from the reactive section. In this study, we proposed a single reactive distillation configuration without a prereactor and the use of an extraneous entrainer (cyclohexane) and investigated the influence of various parameters, such as entrainer composition, reboiler duty, feed location, and number of reactive stages, on process performance. We demonstrated that the use of an extraneous entrainer instead of the internal entrainer, butyl acetate, can significantly improve the process efficiency and achieve great energy savings and capital cost reduction compared to the use of a prereactor followed by RD with butyl acetate as an entrainer.

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“…Also, RD provides advantages over traditional processes to upgrade fermentation products as recognized since early 1900s [1]. This method has been successfully applied for esterification of solutions with acetic acid [2][3][4][5][6][7][8][9][10][11][12][13], lactic acid [14,15], and citric acid [16,17].…”

Section: Introductionmentioning

confidence: 99%

Phase equilibria for reactive distillation of diethyl succinate. Part II: Systems diethyl succinate+ethyl acetate+water and diethyl succinate+acetic acid+water

Orjuela¹,

Yanez²,

Rossman³

et al. 2010

Fluid Phase Equilibria

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Recovery of Acetic Acid by Reactive Distillation: Parametric Study and Nonlinear Dynamic Effects

Cited by 9 publications

References 25 publications

Dynamic Process Intensification of Dimethyl Ether Reactive Distillation Based on Output Multiplicity

Dynamic Process Intensification of Dimethyl Ether Reactive Distillation Based on Output Multiplicity

Entrainer-Enhanced Reactive Distillation for the Production of Butyl Acetate

Phase equilibria for reactive distillation of diethyl succinate. Part II: Systems diethyl succinate+ethyl acetate+water and diethyl succinate+acetic acid+water

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